OCFS2_INDEXED_DIR_FL
if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INDEXED_DIR_FL)
OCFS2_I(dir)->ip_dyn_features |= OCFS2_INDEXED_DIR_FL;
OCFS2_I(dir)->ip_dyn_features &= ~OCFS2_INDEXED_DIR_FL;